| <!DOCTYPE html> | 
 | <link rel="help" href="https://drafts.csswg.org/css-align-3/#baseline-rules"> | 
 | <link rel="help" href="https://drafts.csswg.org/css-grid-1/#alignment"> | 
 | <style> | 
 | #target { | 
 |   display: grid; | 
 |   grid-template-columns: 120px; | 
 |   justify-items: last baseline; | 
 |   width: 200px; | 
 |   border: solid 3px; | 
 |   position: relative; | 
 |   line-height: 0; | 
 |   writing-mode: vertical-lr; | 
 | } | 
 | span { | 
 |   display: inline-block; | 
 |   width: 1em; | 
 |   height: 1em; | 
 |   outline: solid cornflowerblue 3px; | 
 |   outline-offset: -3px; | 
 | } | 
 | #target > div { | 
 |   flex: none; | 
 | } | 
 | #target > :nth-child(1) { | 
 |   background: lime; | 
 |   margin-bottom: 20px; | 
 |   padding-bottom: 20px; | 
 |   font-size: 20px; | 
 |   writing-mode: horizontal-tb; | 
 | } | 
 | #target > :nth-child(2) { | 
 |   background: hotpink; | 
 |   font-size: 30px; | 
 |   writing-mode: horizontal-tb; | 
 | } | 
 | #target > :nth-child(3) { | 
 |   background: papayawhip; | 
 |   font-size: 10px; | 
 | } | 
 | </style> | 
 | <script src="/resources/testharness.js"></script> | 
 | <script src="/resources/testharnessreport.js"></script> | 
 | <script src="/resources/check-layout-th.js"></script> | 
 | <body onload="checkLayout('#target > div')"> | 
 |  | 
 | <div id="target"> | 
 |   <div data-offset-y="40"><span></span><br><span></span></div> | 
 |   <div data-offset-y="20"><span></span><br><span></span></div> | 
 |   <div data-offset-y="75"><span></span><br><span></span></div> | 
 | </div> |